there r 2 groups of worker.. skilled n partially skilled. if both group work togather they nid 30 days to finish the job. if partially skilled worker can oni do 2/3 of the skilled worker did in a day. how many days needed if only partially skilled worker is workin to finish the job?TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。# q) }( { o0 z3 e& I3 |0 \+ I
A.50tvb now,tvbnow,bttvb9 l+ F" V( ~; d# v, r
B.60
; O. ?5 Z& T" I, wTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。C.654 T9 N Z" e! W* G
D.75 |
發表於 2007-9-11 07:38 PM
| 
